Profit Margin Calculator
Work out your profit and profit margin from cost and selling price.
Profit margin
33.33%
- Profit
- £25.00
v1.0 · Reviewed September 2026
How this is worked out
Margin measures profit against the sale: (selling price − cost) ÷ selling price × 100.
Worked example
- Cost £50.00
- Selling price £75.00
(75 − 50) ÷ 75 × 100
33.33% margin, giving £25.00 profit
Assumptions and limits
- This is margin, not markup. Dividing by the cost instead would give 50 per cent for the same sale.
- Only the cost you enter is deducted, so it is a gross figure rather than a net profit after overheads.